450 CREW
Monster Energy Yamaha Star Racing
Team Social Media: @starracingyamaha
Team Manager: Rich Simmons
Crew Chief: Jordan Troxell
Engine Builder: Brian Calma
Suspension Tech: Ricki Gilmour
2 Cooper Webb
Mechanic: Alex Campbell
Date of Birth: November 10, 1995
Year Turned AMA Pro: 2013
Height: 5'7"
Weight: 145 lbs.
Hometown: Newport, NC
Accomplishments
- 3-time Monster Energy AMA Supercross Championships 450SX Champion (2025,2021, 2019)
- 2020 Monster Energy AMA Supercross Championship 450SX Runner-Up
- 2023 Monster Energy AMA Supercross Championship 450SX 3rd place
- 1 career AMA Pro Motocross Championship 450 Win
- 30 career Monster Energy AMA Supercross Championship 450SX Wins
- 4th on the all-time 250SX West wins list
32 Justin Cooper
Mechanic: Mikey Germain
Date of Birth: August 31, 1997
Year Turned AMA Pro: 2017
Height: 5'7"
Weight: 150 lbs.
Hometown: Los Angeles, CA
Accomplishments
- 2021 Monster Energy AMA Supercross Championship 250SX West Champion
- 2-time AMA Pro Motocross Championships 250 Runner-Up (2023, 2021)
- 2020 Monster Energy AMA Supercross Championship 250SX West Runner-Up
- 4 career AMA Pro Motocross Championship 250 Wins
- 39 career AMA Pro Motocross Championship 250 Podiums
- 2018 Pro Motocross 250 Class Rookie of the Year
- 2017 AMA Nicky Hayden Amateur Horizon Award
250 CREW
Monster Energy Yamaha Star Racing
General Manager: Wil Hahn
Team Manager: Jensen Hendler
Media Relations: John Kuzo
Crew Chief: Trevor Carmichael
Engine Builder: Georgie Frye
Engine Builder: Jake Butler
Suspension Tech: Jake Price
Suspension Tech: Andrew Bergman
38 Haiden Deegan
Mechanic: Brent Duffe
Date of Birth: January 10, 2006
Year Turned AMA Pro: 2022
Height: 5'7"
Weight: 155 lbs.
Hometown: Temecula, CA
Accomplishments
- 2025 AMA Supercross 250 West Champion
- 2025 AMA Pro Motocross 250 Champion
- 2-time SuperMotocross World Championships 250SMX Champion (2024, 2023)
- 2024 AMA Pro Motocross Championship 250 Champion
- 2-time Monster Energy AMA Supercross Championships 250SX East Runner-Up (2024, 2023)
- 3 career SuperMotocross World Championship 250SMX Wins
- 7 career AMA Pro Motocross Championship 250 Wins
- 2023 AMA 250SX Rookie of the Year
- 2023 Pro Motocross 250 Class Rookie of the Year
23 Michael Mosiman
Mechanic: Brice Phillips
Date of Birth: July 16, 1999
Year Turned AMA Pro: 2017
Height: 5'11”
Weight: 156 lbs.
Hometown: Sebastopol, CA
Accomplishments
- 2022 Monster Energy Supercross Championship 250SX West: 3rd Place
- 2021 Monster Energy Supercross Championship 250SX East: 5th Place
- Monster Energy Supercross 250 SX West Win
- 3 Career AMA Pro Motocross 250 Podiums
25 Nate Thrasher
Mechanic: Christian Kauffman
Date of Birth: December 9, 2002
Year Turned AMA Pro: 2020
Height: 5'8”
Weight: 150 lbs.
Hometown: Livingston, TN
Accomplishments
- 2022 Monster Energy AMA Supercross Championship 250SX West 5th place
- 2 career Monster Energy AMA Supercross Championship 250SX West Wins
- 2 career Monster Energy AMA Supercross Championship 250SX East Win
37 Cole Davies
Mechanic: Lachie Mills
Date of Birth: September 9, 2007
Year Turned AMA Pro: 2025
Height: 5'8”
Weight: 143 lbs.
Hometown: Waitoki, New Zealand
Accomplishments
- 2024 Supercross Futures AMA National Champion
- 2 career Supercross Futures 250SX Wins and a total of 4 podiums
- Multiple New Zealand National Championships
61 Max Anstie
Mechanic: Austin Kent
Date of Birth: April 25, 1993
Year Turned AMA Pro: 2009
Height: 5’10”
Weight: 165 lbs.
Hometown: Newbury, England
Accomplishments
- 14 MX2 Podiums
- 6 MXGP Podiums
- 6 MX2 Wins
- 2017 MXoN Winner
- 2x Australian SX2 Champion
- 2023 SX2 World Supercross Champion
- 2X 250 AMA Supercross Winner
163 Pierce Brown
Mechanic: Jaden Rolbiecki
Date of Birth: June 3, 2009
Year Turned AMA Pro: 2020
Height: 5'11”
Weight: 158 lbs.
Hometown: Sandy, UT
Accomplishments
- 2024 SuperMotocross World Championship 250SMX 3rd place
- 2022 Monster Energy AMA Supercross Championship 250SX East 3rd place
- 1 career SuperMotocross World Championship 250SMX Win
- 2 career Monster Energy AMA Supercross Championship 250SX East Podiums